Typewriting machine



Oct. 26 1926.

A. G. F. KUROWSKI TYPEWRITING MACHINE Filed Sept. 22, 1924 2 sheets-sheet 1 /n ven for' Oct. 26 1926.

A. G. F. KUROWSKI -2 sheets-Sheet 2 Patented oa. ze, 192e.

TYrnvmrr'naooiuranror amv Trona, N, Y.; AC'earonarion or DELAWARE.

l trarr:aWai-infinGf'V raaoiarn. l 1

. This invention relates to improvementsiin typeivriting machines, and more particularly '3o certain innovations in standard typewriter.` i i i The improvement includes the provision of an `extra or spare platen built into themachine, both ot the platens being equipped Wit-h individual controlling mechanism, thus providing `tivo independent Work-handling units in one machine. The need for a spare platen `may arise,` 'for example, `Where one Work-pieceis already set up'in the machine and it becomes desirable to insert and type u-pon another lWork-piece without removing or disturbing the tirstf i simple, `e'tiicient and inexpensive brace is provided toV steady the tivo platen-cylinders .which meet inthe centen-Without theiuse otjournals-and the like. This brace forms a central supportfor the inner ends :of the platen-cylinders which, at their outei` ends, are suitably supported by collars operatively secured around the .plater1-shaft. The brace is secured directly to a an Underwood part of the movable'carriage and-reinforces the platen-shaft centrally. The iprovision of the spare platen facilitates the expeditious handling of various other kinds of Work, including the typing of bills onone platen While record or ledger sheet istyped upon the other platen, a rapid inserter being provided ivith each platen 'for the attainment ot speed in connection With properly positioning a Work-sheet.` with lits upper edge spaced the requisite distance above the printing. line, as Will be readily understood by those skilled in the art. c

Another feature ot the present invention is the provision of' nica-ns for predetermining the extent of movement of the 4rapid inserter by means of visua-Lindications inscribed upon suitable bracket-plates vwhich arcsecured upon the end supports of the usual carriage-frame 'for the purpose. of positioning, by a single strokev or sweep of an operating handle, the upper' edge of the `Work-sheet with respect to the printing line vott themachine. i

in carrying out the details of construction certain `economies in the operation of the platen are attained which ivillbe hereinafter explained, and various parts responsible for application siasepteriber aa,2 1921i:` serial no. 739,020; p

the rotation of theplaten iorfline-spacing and Work-sheet positioning purposesare` reorganized in a inoreicompact manner. n..

In `connection withy theoperation of 'the split platen, there are provdedtivo'liingerlknobs, one iforrotating one of the platenr cylinders at' either side ofthe machine, and

4the otherffor rotating the remaining platencylinder.

Therelsfalso provided a tearing-:ofilknife Vwith novel means forV lowering the saine into operative..position relatively to; the platen,

or for raising the same toiinoperative position. j .y i la y(Ether `features and advantages-Will herein- `after appear@` y 11 1 llnthe accompanying'idrawings,` .1 Figure l isa top plan view, partlybrolen aivay, of the parts-of the present invention; .s Figure 2 is; aside elevation of parts of the present invention, partly` in section. i.

plate.. `Figure 4 Figure 8 is a front elevation ot' the braclet-plate, partlybrolien away, showing `the relative positions occupiedbytherapid inserter, the stop thereton and `,carriage-release lever. `1 y in lthe drawings, 10 designates the for- Ward ledge of the :ypewriting inachinehaviuga bracket ll inlivhichis guided afroller l2 ou the adjacent portion of the carriaue lf3 carrying afslotted `guide ,lV/l in ivhie manually shiltable a line-spacinglever i5 which has a hub 16 jour aled on p'n y suitably] mounted upon the carriage-trame. 'lle lever l5 has a .pusher l8arranged to coutactuvith a si icer slide 1Q lwhich has `a pin il() connected to a retractable spring 2l which appliesy tension against the movement of the slide 19; i i

Figure 3, is a front elevation ot a `bracketi is .a iront elevationota stop-` f kmember provided With a .positioning latch.

The slide 19 hasV a spring 22 which presses a pawl 23 into driving relation against a ratchet-Wheel 24 lined upon a platen-shaft 27 which extends through the end supports 25a of' a platen-frame to Which are secured the, horizontal flanges 26 of bracket-plates 25 which extend in parallel relation to the end supports 25a to produce, with the latter, housings, the end supports 25a having openings 28 into which the platen-shaft 27 projects rotatably. A linger-knob 29 is secured at one end of the platen-shaft 27, and another finger-knob 3() is secured tothe 'other end thereof, the` latter projecting beyond bot-hV end supports25a of the platenframe. The carriage-frame has. sidewalls 86a"eiitending into the housing formed-by the end supports 25a and the bracket-plates 25, these side Walls being disposed in ad- Avance of the end supports 25a, and the ratchet-wheels 24 being disposed in advance j of these side Walls.

A bushing 3l is tixedly secinfed upon the platen-shaft 27 between 'the ends thereof, as shownV i'n Figure 6, andv has an integral flange 32 Vformed thereupon of the saine thickness as an annulus 33, 'the flange 32 snugly projecting in rotatable fashion Within the annulus 33, so as to be braced and supported by the latter. rthe annulus has an arm 34, secured upon a fastening pin 35, liXed upon a Vlug 36, formed upon an angular support 37, secured upon an outstruck ledge-38, cut out preferably from a paper-shelf or paper-table 39, a set screw 40 removably securing the angular support upon the ledge 38. The annulus 33 is also provided with-an arm 4l arranged so as to y extend in an opposite direction with respect to the arm A fastening pin 42 positions the arm 4l fiXedly upon a lug 43 formed upon a support 44 secured by fasteners 45 upon the cradle or under part of the platenframe structure 46.

Screws 47 preferably secure the platencylinder 48 in Contact with the dange- 32 of the bushing 3l, the diameters ofthe cylinder 48 and flange32 being the saine. A sheathing 53 envelops the platen-cylinder 48 and makes the outside circumference thereof equal in diameter to the outer circumference of the annulus 33, the side ot said annulus engaging the adjacent edge of the sheathing 53. Another platen-cylinder 48a isarranged adjacent the shaft 27 in longitudinal alignment Wit-h' the cylinder 48, and also has a rubber sheathing 53 similar to that already described and of the same diameter therewith. The platen-cylinder' 48a has a concentric longitudinallyestending sleeve 49 which fits around the shaft 27 and which contacts with the flange 32. A bushing 50 is fixed upon the inner end ofthe sleeve 49, and has a flange 5l contacting with the flange 32 of the bushing 3l rotatably, this flange 5l being secured to the platen-cylinder 48a. rihe sleeve 49 projects beyond one of the end supports 25a and .is secured, at its extreme outer end, by a fastener to a linger-imola by which the sleeve and the platen-cylinder 48UL may be manually rotated.

The platen-cylinders 48 and 48 are tubular and the flanges 32 and 5l close the inner ends thereof, While their outer ends are respectively closed by end plates 56 having hubs 57, the hub of one platebeing secured to the sleeve 49 by a fastener 58, While the other end-plate 56 has a hub 57 secured 'by thev fastener 58 directly to the platenshaft 27.

A feed-roll release-handle 59 has a crank 60 fulcrumed upon apin 6l Which is secured upon one of the bracket-plates 25, and the crank 60 has a link 63 connected'to it by a pin 62, which link operates a crank 66 secured upon a main shaft 67 arranged inthe lower part of the cradle 46. A stop 64 is carried bj the crank 60 for limiting the extent of movement of the feed-relirelease lever 59. @ranks 68 are secured upon the shaft 67 at opposite ends thereof, and these cranks are connected to suitable forkshaped links 69 secured upon a countershaft 75, the ends of VWhich are suitably supported by holders 83 secured upon the paper-shelf 39, the forward edge of Which forms a paper-guide or clamp 8l extending longitudinally of the platen. The means for clamping the paper-clamp onto the platen, or releasing it therefrom, is the same as described in Patent No. 1,332,263, granted to VAlfred G. F. Kuroyvski, March 2, 1920.. A pair of spiders 76 are secured tixedly at Vthe opposite ends ofthe countershaft 75, andoperatively mounted in the opposite arms of each spider are longitudinal rods 77 and 78, upon each of which arc journaled longitudinally-separated feedrolls 79 and 8O which project through slotsl '75?1 formed in the paper-clamp, so as to roders 48 and tatably engage the platen-c '483.

Formed upon one side of each spider is a stud which is slidably mounted ...n a recess or slot 74`of one of tvvo slotted bearings or forks lso as tohave vertical movement therein. Tivo coil spritew ably secured to the 'shaft 67, and throi connection 70,V eachspringis secured tof the links 69.

Secured in the side Walls 86a of the main carriage-frame is a pin upon which is,

Securedto lever 8,6by tastenersSS is a lug 67 havingr ahorizontallyextending arin 89, which supports and spaces, laterally of the housing in which theratchet-vvheel 24 is mounted, an operatingarin v9.0 ot a handle 91, which handle is the-carriagereleasc` handle. w

` 93 designates a lever which has a part 93b journaled operatively upon the shait27 in ybacko't the bracket-plate 25, andwithin the adjacent housing, and this lever 93a isotfset at 93c to position anintegral `handle 93 out-f side the housing, the lever "93 projecting movably into a recess 106 formed in the adjacent bracket-'plate 25, as shown inFigures 2 and 3. A finger-piece 94 is'inounted upon Y the handle 93: The lever 93EL is also lformed integrally between its ends With a recess or notch97, and ina plane 1'vith this notch is a cam which merges into a hook 96. A

lever 98 (Figure 7) is ulcrum-ed -upon a pin 100 secured upon the end support 25,

and a coilspring 101 is secured at100 to the end support 25a, and is also secured to 1- thc lever` 98, so as to urge aroller detent or stud 99 ulcrumed `at. the `lower `end ot the lever 98 into pressed engagement With any ot the teeth of the ratchet-Wheel 24, this stud 99 holding theV ratchet-Wheel against retros e grade action.

A rapid inserter.` actuated by a sweeplevei",`is provided Whichoperates independently ot the usual line-spacing mechanism, and is designed to carrythe platen rotatably around over variable distances, so as to position the upper edge of theWork-sheet at variable distances apart with respect tothe print-ing line ot the machine, -Where `the iirst line isto be typed upon thel Work-sheet;

Each of the bracket-plates 25 has a ratchetplate 108 secured by removable fasteners 109 to its outer side, which ratchet-plate hasa singleopening` 110 that registersivith a recess 110 `formed upon the plate 25. The ratchet-plate has a segmental jagged surface 109,` andconcentrically of the platen there are inscribed upon the outer face ot the bracket-plate v25 an arcuate `series ot marks.

orcalibratioiis extending radially of the jagged edge 109g# Opposite each ot the iarks 105 `is one ot a consecutive series oit numbers 1, 2,'3,4,`etc., as indicated at` 104. The marks and numbers `formv a dial Which provides means tor predeterminately actuating the platen-cylinders, separately, over variable distances.

A hub oi"-busliiiig` 116 projectspartially through the circular opening 110 in the ratchet-plate 108,`so asito entend into the adjacent housing,- Where it is provided-With an integral crank'117 adjacent th`e-inner side of the bracket-plate 25. The crank 11 carriesa lever 119 yieldably lcontrollcdby a spring 122 `secured to a pin 135, Vsecured upon the crankll'?. Y Lever 119 *carries a Wedge-shaped olaiv orpawl Whichis urged `by AthefspringV 122n`toi eri- 'gageme'ntl with any? Iot the teeth of? the ratchet-Wheel 24,"as shown `in FigureS.-

A band 112 has a collarf112a secured lby fastenerrllupon the bushing 116, and eX- tending radially oli the baiidi112is a sweep-y lever113 `carrying` a handle 114.4` Theband 112 is positioned in advanceot tix-stirred j ratchet-plate" `106, and rotatably surrounding the bandw112 is a ring 126 'ot a sinallerfdiameter than theliXed ratchet-plate 108. ,A stopmemberisinounted solas to move `with the ring' 126 and consists yot'` a prlojectien129@ extending radially of 4the ring .126.1 @The projection 129 is provided withV a lpair of angularly-disposed*lugs `128i aiid129"v ai` iaiigjod'in stepped relationyaiid torinedright angularly upon lug i128 isl a pointer ed,`g'eV 128, `While af stop edge-129istormedupon the lug 4129'.` flhe pointer edge 128 and kstop -1 edge 129 project in opposite` directionsaso thatthe pointer edge v128 vvilly register with and indicate any ot the calibrated'radial marks 105 Von `.the .bracket-plateL 25, While the stop edgje129ivill stop or, limit the extentot travel or movement, and determine `the length` ot the strokeallowed theV operating` handle `113, which is ,arranged to abut'this stop 129, as shoivnin Figure-8.

A coil spring'- 124is secured `at'9Vetothe operatingv handle. 113, and extends around the periphery ot the band 112, ivit-hits other -end secured to a pin 98seeured uponan arm 106a formed integrally upon the.` bracketvplate 25. In order to hold-this spring. 124 `against' lateral displacement from the lpin 93fa sideior guide flange `113?-'is secured upon the band 1:12 which retains'the spring'V or doa` 131. .which detent or 'dog is held -in n lcontact and in engagement `With theateeth ,IlO

of the fixed ratchet-plate 108 by. a spring 134 y. securedlupon a'` pin` 125 `and alsoto a 4.slide i 132 connected tothe detent, this slide having Y iso a handle133 by. means of which ythe detent can be disengagedV `trom the ratchet-plate against the tension ofi the springi134.` The Adetent may then be carried around the ratchet-plate opposite "any 'predetermined tooth thereof, and then the slide 132 andvdosr 131 are automatically` impelled so that the detent may engage Jwith i this tooth. :rlVlien `the pointeredge 128 stopsopposite anv of the calibrated marks 105.it serves to position the *detent131 againstfone otl the teethrof the i lill e Vn

ratchet-plate 108, and also tolocate the stop 129 in correct position to limit the sweep of the operating handle or lever 113.

102 designates the usual type-bars, and 103 the type-surfaces. When the operating handle 113 engages the 'stop 111, as shown in Figure 2, the crank 117 is positioned approximately at the lower dead center of the shaft 27, and just before reaching this position, during the return of the handle 113 by thespring 124, the Wedge-shaped click or claw 120 engages a fixed pin 121, with the result that the lever 119 and claw 120 are retracted automatically, the claw being disengaged from the ratchet-Wheel 24, against the tension of the spring 122,v so that unless and until the operatingl handle113 is manually operated the ratchet-Wheel 24 may be freely line-spaced independently of the action 'of the rapid inserter controlled by the operating handle 113.

15a designates another line-space handle at the right hand otA the typeivriting machine for line-spacing the platen-cylinder 48a in a manner already explained in connection with the line-spacing of the platen-cylinder 48. The rapid inserter, the dial and the other parts are provided at this side ol' the machine also. The only dilierence is that the carriage-release lever 136, at this sideY o1 the machine, is located with its operating lever 136" located vWithin'thc adjacent housing tormed` by the adjacent end support and bracket-plate.

Means are provided for locating a ytea-ring-oil knife-bar 142 in operative or inoperative position. Brackets 13.7 are secured upon the llanges 26 of the bracket-plates 25, and carry standards 138 inV Which are fixed pins 139` on which are 'fulcrumeth at opposite sides of the machine, levers 140 formed integrally with forwardly-extending andvangularly-disposed arms 141 which terminate in hooks 149 to which the knife-bar 142 is att-ached, and betweenV which it extends longitudinally with its tearing-oil edge engageable with the platen-cylinders 48 and 48a, as shown in Figure 7.` In order yto yieldably latch the tearing-off knife in operative down. or inoperative up, position. plungers 145 are provided which are pivotally secured at their inner ends upon pivots 144 Vsecured upon the standards 138,'ivhich Vplungers projecty telelscopically finto tubular links '146 pivotally VVconnected by lugs 147 to the levers 140 adjacent the arms 141, coil springsV 148 being incased in each tubular link 146 to tension the telescopic action of the plungers 145 in the tubular links 146 as the levers 14() move to horizontal or vertical position, shown in Figure 8.

provide a latching means, and act as braces Vlor properly positioning the knife-bar 142 in operative-position againstthe plateineylm termined mark 105. v113 is then swung away from the stop 111 `until it contacts With the stop 129. As it The 'co-operating plungers 145 and tubular links 146 with. the springs 148 ing either used as a spare platen or to co-' operate with the other platen in handling corelated Work-pieces. In the bookkeeping field for instancel it is customary to type entries upon bills, and to keep a record thereof, in a. ledger account, the sheet A may represent a bill inserted uponV the papershell 39 in Contact with the platen-cylinder 48, While the sheet B may represent a ledger-sheet similarly positioned against the platen-cylinder 48a, shown in Figures 1 and 5, these sheets being, of course, held last onto the platen by the engagement of the teer -rolls 7 9 and 80, as Well as the paperclamp 81. Ordinarily it may be necessary to progresaivel y type upon each bill certain items or' account which are added together, and the total thus obtained is typed upon the bill at which time the same total is to be typed upon the ledger-sheet. Each item of yaccount typed upon the bill thus calls for an intervening line-spacing' oli the platen, which line-spacings multiply before the total otAV these items is ready to be typed upon the ledger-sheet; therefore the rapid inserter is provided which will, at one stroke of the proper operating handle 113, carry the platcn-cylin'der 481l over a distance equal to the combined line-spaeings ot' the aforementioned bill; or the rapid inserter may turn either j `platen-cylinder overa. predetermined distance to space the upper edge ot either the bill or ledger the proper distance from the printing line at one stroke of the operating handle 113. Y

rlhe operator takes hold of the handle 133 to retract the detent or dog 131 from the lined ratchet-plate 108, which detent is then carried around until thev pointer edge 128 registers with any of the calibrated marks '105 having that number designated interchangeablyf194, Which corresponds to the number of line-spacmgs which are'to be combined 1n one sweep ot the operating hanydle 113. By releasing the detent, the latter clicks into engagement With one of the teeth of the ratchet-plate 198 opposite the prede- The operating handle swings the paivl or' click 120 engages the,

lll)

lim

ratchet-Wheel 24 and carri s it around the same distancethe operating handle 113 is `moved. The operating arm 90 is depressed by handle 91 to tilt the lever and to `ment of said sweep-handle, said click being urged by said crank to carry said ratchet-- Wheel around with it during its movement.

5. In a typewriting machine, the combination of a supporting plate having a lateral recess and an integral arm formed therebyK a platen-shaft projecting through said plate,v

a hub on said shaft mounted in said re'cess, a, platen connected for joint rotation with .said shaft, a collar revolubly mounted upon saldi,

hub, means arranged to operate said collar said collar and-being secured to said machine, another pin .engageable by said Wedgeshaped click upon its return stroke, Whereby said click is retracted from said ratchet- Wheel, and a handle fOr-operating said adjustable stop. f

6. In a typewriting machine, the combination of a fram-e having depending end plates, each of said end plates having a lateral recess, a fixed ratchet-plate, having an annular opening therein, secured upon the outer face of each of said end plates, a hub rotatable in each of said openings, a

` platen-shaft fixed to said hubs, av platen fixed upon said shaft, a supporting arm movable radiallyof` said ratchet-plate, a spring-pressed detent releasably engageable Ywith the teeth of said ratchet-plate and slidably retractable therefrom, means for rotating said platen, a handle for actuating said means and being pivoted around one of said hubs, means in back of said plate and j engageable withvsaid detent to retract the `same from said ratchet-plate, and an operating handle for the last-named means ofiset laterally so as to have a portion located in front of said plate, and so that said operating handle may move freely in said re- Y cess.

7. In a typeivriting machine, the combination of a rotatable platen, end plates upon 'which said platen is journaled, a ratchet-V Wheel for turning said platen, line-spacing mechanism having provision for operating said ratchet-Wheel, one of said end plates being provided With a dial, a stop-member pivoted upon said endV plate, means carried by said stop-member for latching it at predetermined points of said dial, an indicating edge carried b-y said stop-member for locating any point of said dial Where said stop-member is to be latched, means holding saidstop-meinber unlatched, a f-eed-pawl operable independently of the line-spacing mechanism normally retracted from said ratchet-Wheel, means for automatically engaging said feed-pawl with said ratchet- Wheel to drive the latter, and means having .a v ariable throw controlled by said stopmember for actuating` said paWl-engaging means.

8. In a device of the kind described, the combination of a platen, means for rotatably supporting said platen, a ratchet-Wheel on said platen, a feed-pawl engaging said ratchet-Wheel to drive it, a line-spacing slide for actuating said feed-pawl, an extra feedpavvl also engaging with said ratchet-Wheel to actuate it, means concentric with said platen for supporting the last-named feedpawl, a fixed stop, an operating handle for actuating said second-named means, means for predetermining the distance of movement of said handle away from said stop, a spring engaging said handle to move the same to -a position of rest against said stop, and means engaged by the extra feed-paivl just prior t-o the engagement of said handle With said stop for retracting said pawl from said ratchet-Wheel.

9. A device of the kind described consisting of a bracket-plate formed With a medial recess, a downwardly and angularly disposed a 1m formed integrally uponsaid plate and intersecting the longitudinal axis of said recess, and a plate removably secured upon said bracket-plate land having a central opening registering with said recess, said plate having a segmental jagged edge, said bracket-'plate being inscribed with an arcurate series of consecutively enumerated and calibrated marks arranged radially of said segmental jagged edge.

l0. In a. typewritingV machine, the combination `of a bracket-plate, a. platen-shaft projecting therethrough, a ratchet-Wheel on said shaft in back of said plate, a fixed ratchet-plate secured to the outer face of said bracket-plate, an operating handle having a bushing of smaller diameter than said ratchet-plate and disposed in advance thereof, said bushing` arranged to rotate upon said shaft, a driving paWl engageable With said ratchet-Wheel and carried by said Operating handle, a stop-member for limiting the movement of said operating handle, a latch carried by said stop-member enga-ging the teeth of said fixed ratchet-plate to predetermine the position of said stop-member, a coil spring extending aro-und and over said bushing, and being secured at one point to' said plate and also to said operating handle, anda side flange mounted upon said bushing and retaining said spring against lateral displacement from said bushing as said operating handle moves radially of said shaft. A I' 1l. In a typewriting machine, the coinbination of a. platen-traine including an end support and a brachet-plate secured upon said end support and 'forming With the latter a housing, a platen-shaft projecting through said end support and bracket-plate, a platen rotatably ino-unted upon said shaft adjacent said end support, a carriage upon which said platen-traine is mounted having` a side Wall extending into said housing, a ratchet-wheel mounted upon said shaft in advance of said side Wall, a ratchet-plate secured upon the outer face of said bracket,-

plate having an opening, a bushing rotatably projecting through said opening into said housing, a crank lined upon said bushing in said housing, a click yieldahly carried by said crank and engaging said ratchet-Wheel, an operating handle secured to said hushing in advance of said ratchet-plate, and a stop-member having a latch moving circurnterentially of said ratchet-plate and engaging the llatter to deiine stop positions for said operating handle.

ALFRED o. r. KUROWSKI. 

